1. Biology 224 Human Anatomy and Physiology - II Lecture 01 Dr. Stuart S. Sumida Organizational Overview of Thorax, Abdomen, Pelvis

2. Thorax Abdomen Pelvis/Perineum

3. Abdomen and Thorax separated by DIAPHRAGM. Thorax and Pelvic region not separated by a defined partition.

5. Thorax Abdomen

6. DIAPHRAGM: Derived from cervical hypaxial musculature (why scalene muscles are all that is left of lateral hypaxial musculature of neck) Innervated by Right and Left Phrenic Neve (C3,4,5)

7. Review of Early Development of Humans Basic Cross-section of the Human

10. COELOM AND ITS CONTENTS: Filled with coelomic fluid. PARIETAL PERITONEUM – mesodermally derived layer coating interal surface of body wall. VISCERAL PERITONEUM – mesodermally derived layer coating internal organs. MESENTARY – bi-layer of mesodermally derived material that connects to dorsal or ventral midline to suspend gut internally. PARIETAL PLEURA – serial homolog of parietal peritoneum in thorax. VISCERAL PLEURA– serial homolog of visceral peritoneum in thorax.

11. NECK and THORAX and MAJOR COMPONENTS OF RESPIRATORY SYSTEM Lungs Bronchi Trachea Pharynx Nasal Pharynx Oral Pharynx Common Pharynx

17. Review of Early Development of Humans Basic Cross-section of the Human COMPONENTS OF EMBRYONIC FOREGUT Including and up to: Stomach Duodenum (first bend of small intestine) Liver Gall bladder Pancreas Sympathetic Innervation: Greater splanchnic nerve (T5-T9) Parasympathetic Innervation: Vagus Nerve (X) Arterial Supply: Celiac Artery and its branches Venous Drainage: Splenic Vein and its tributaries.

20. Hepatic Portal Vein Bile Duct

22. Liver Stomach

23. COMPONENTS OF EMBRYONIC MIDGUT Including and up to: Jejunum and Ileum of small intestine Appendix Ascending Colon Transverse Colon (up to LEFT COLIC FLEXURE) Sympathetic Innervation: Lesser Splanchnic nerve (T10-T11) Parasympathetic Innervation: Vagus Nerve (X) Arterial Supply: Superior Mesenteric Artery and its branches Venous Drainage: Superior Mesenteric Vein and its tributaries.

29. COMPONENTS OF EMBRYONIC HINDGUT Including and through to: Descending Colon Sigmoid Colon (through to) Rectum Sympathetic Innervation: Least Splanchnic nerve (T12) Parasympathetic Innervation: Sacral Outflow (S2-4) Arterial Supply: Inferior Mesenteric Artery and its branches Venous Drainage: Inferior Mesenteric Vein and its tributaries.

31. HEPATIC PORTAL SYSTEM: Hepatic portal vein Splenic vein (foregut) Superior Mesenteric Vein (midgut) Inferior Mesenteric Vein (hindgut)

32. INTRAPERITONEAL vs. RETROPERITONEAL Most of the internal organs are surrounded by visceral peritioneum – the INTRAPERITONEAL condition. Some organs (e.g. kidneys) are between peritoneum on one surface, and the body wall on the other – the RETROPERITONEAL condition.

34. Retroperitoneal components of abdominal cavity

35. STRUCTURES WITHIN THE PELVIS End of digestive system Female reproductive organs Bladder Ducts to, and exiting from, bladder